Basically but it’s better, nix has a unique way of doing the underlying the logic which as is own benefits. Also since nix is not a container it doesn’t have any of the speed penalties that come along with that. Since nix is functional as well, it means all operations can be undone. So where you might te build a docker image from scratch or by using a A/B system like other immutable distros it allows nix to just modify the system while it’s running with minimal side effects.